> I have also another good example for a slow left join work.
> Can I do it better?
> explain analyze select * from a_doc D join A_SKLAD S ON(D.IDS=S.IDS_DOC) join
> A_MED M ON(S.IDS_MED=M.IDS) where d
> .date_op >= 9600 and d.date_op <= 9700;
> -> Seq Scan on a_doc d (cost=0.00..13145.43 rows=11167
> width=1344) (actual time=0.22..1316.10 rows=9432 loops=1)
I wouldn't expect too much from query, which starts joining over 10k
rows and returns over 60000 rows. Do you really need such a big result?
Regards,
Tomasz Myrta